Zyxel RCE Vulnerability Allows Arbitrary Query Execution Without any Authentication

A critical vulnerability in Zyxel’s FLEX-H Series devices that enables attackers to execute arbitrary database queries and gain remote code execution capabilities without requiring authentication.  The flaw, discovered by a researcher “rainpwn” and officially disclosed on April 22, 2025, exposes these enterprise-grade security appliances to potentially devastating attacks. The vulnerability stems from an architectural misconfiguration […]

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